<template>
  <textarea :id="tinymceId" style="visibility: hidden" />
</template>

<script>
  import loadTinymce from "@/utils/loadTinymce";
  import { plugins, toolbar } from "./config";
  import { debounce } from "throttle-debounce";
  import zh_cn from "./zh_CN";

  let num = 1;

  export default {
    props: {
      id: {
        type: String,
        default: () => {
          num === 10000 && (num = 1);
          return `tinymce${+new Date()}${num++}`;
        },
      },
      value: {
        default: "",
      },
    },
    data() {
      return {
        tinymceId: this.id,
      };
    },
    mounted() {
      loadTinymce((tinymce) => {
        // eslint-disable-next-line global-require
        // require('./zh_CN')
        zh_cn();
        let conf = {
          selector: `#${this.tinymceId}`,
          language: "zh_CN",
          menubar: "file edit insert view format table",
          plugins,
          toolbar,
          height: 300,
          branding: false,
          object_resizing: false,
          end_container_on_empty_block: true,
          powerpaste_word_import: "clean",
          code_dialog_height: 450,
          code_dialog_width: 1000,
          advlist_bullet_styles: "square",
          advlist_number_styles: "default",
          default_link_target: "_blank",
          link_title: false,
          nonbreaking_force_tab: true,
        };
        this.destroyTinymce();
        conf = Object.assign(conf, this.$attrs);
        conf.init_instance_callback = (editor) => {
          if (this.value) editor.setContent(this.value);
          this.vModel(editor);
        };
        tinymce.init(conf);
      });
    },
    destroyed() {
      this.destroyTinymce();
    },
    methods: {
      vModel(editor) {
        // 控制连续写入时setContent的触发频率
        const debounceSetContent = debounce(250, editor.setContent);
        this.$watch("value", (val, prevVal) => {
          if (editor && val !== prevVal && val !== editor.getContent()) {
            if (typeof val !== "string") val = val.toString();
            debounceSetContent.call(editor, val);
          }
        });

        editor.on("change keyup undo redo", () => {
          this.$emit("input", editor.getContent());
        });
      },
      destroyTinymce() {
        if (!window.tinymce) return;
        const tinymce = window.tinymce.get(this.tinymceId);
        if (tinymce) {
          tinymce.destroy();
        }
      },
    },
  };
</script>
